In which of these animals, antennal gland or green glands functions as excretory organ
Options
(a) Human being (b) Cockroach (c) Planaria (d) Prawn
Correct Answer:
Prawn
Explanation:
In crustaceans, antennary gland or […]
Fovea in the eye is a central pit in the yellowish pigmented spot called
Options
(a) Blind spot (b) Retina (c) Cornea (d) Macula lutea
Correct Answer:
Macula lutea
Explanation:
At the posterior […]
The area of cross-section of one limb of an U-tube is twice that of the other. Both the limbs contain mercury at the same level. Water is poured in the wider tube so that mercury […]
If the volume of a block of aluminium is decreased by 1%, the pressure (stress) on its surface is increased by (Bulk modulus of Al=7.5×10¹⁰ Nm⁻²)
Options
(a) 7.5×10¹⁰ Nm⁻² (b) 7.5×10⁸ Nm⁻² (c) […]
Which among the following gas will greatly deviate from Henry’s law in water
Options
(a) H₂ (b) N₂ (c) CH₄ (d) CO₂
Correct Answer:
CO₂
Explanation:
Gases obey Henry’s law provided (i) the […]
The total energy of a simple harmonic oscillator is proportional to
Options
(a) square root of displacement (b) velocity (c) frequency (d) square of amplitude
Correct Answer:
square of amplitude
Explanation:
The total […]
Which of the following exists as zwitter ion
Options
(a) p-Aminophenol (b) Sulphanilic acid (c) Salicylic acid (d) Ethanolamine
Correct Answer:
Sulphanilic acid
Explanation:
Sulphanilic acid is formed when aniline heated with concentrated H₂SO₄ […]
Three identical spheres, each of mass 3 kg are placed touching each other with their centres lying on a straight line. The centres of the spheres are marked as P, Q and R respectively. The […]
A thin circular ring of mass M and radius R rotates about an axis through its centre and perpendicular to its plane, with a constant angular velocity ?. Four small spheres each of mass m […]
The angular velocity of a wheel increases from 100 rps to 300 rps in 10 seconds. The number of revolutions made during that time is
Options
(a) 600 (b) 1500 (c) 1000 (d) […]
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